Blackburnian warbler (IMAGE) Penn State Caption According to a new study, the evolution of two color related genes helps explain the striking diversity in colors and patterns among wood warblers, like the blackburnian warbler pictured here. Credit Darrell Cochran Usage Restrictions Credit must be provided. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.